IMO, The link provided by @Erick is right... the answer should be 53; and @Brian the calculator did use BODMAS.
Should be 13.Erick your calculator appears to be doing Linear
processing insread of following BODMAS
On 12/30/10, Erick Njenga <eriknjenga@gmail.com> wrote:
> Msema
> kweli<http://www.google.co.ke/search?sourceid=chrome&ie=UTF-8&q=11+x+2+%2B+32+-+21+%2B+5+x+3+%2B+5+x+1+%3D>
> --
>> <http://www.facebook.com/ErickNjenga> <http://www.twitter.com/ErickNjenga>
> Thanks and Regards,
> Erick Njenga Nyachwaya,
> M: +254-725-008-790
>
>
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